| Michael Hennerich | a59ec1e | 2011-06-15 15:08:11 -0700 | [diff] [blame] | 1 | What: /sys/class/backlight/<backlight>/<ambient light zone>_max |
| 2 | What: /sys/class/backlight/<backlight>/l1_daylight_max |
| 3 | What: /sys/class/backlight/<backlight>/l2_bright_max |
| 4 | What: /sys/class/backlight/<backlight>/l3_office_max |
| 5 | What: /sys/class/backlight/<backlight>/l4_indoor_max |
| 6 | What: /sys/class/backlight/<backlight>/l5_dark_max |
| Jesper Juhl | e117d10 | 2011-08-02 00:53:09 +0200 | [diff] [blame] | 7 | Date: May 2011 |
| 8 | KernelVersion: 3.0 |
| Michael Hennerich | a59ec1e | 2011-06-15 15:08:11 -0700 | [diff] [blame] | 9 | Contact: device-drivers-devel@blackfin.uclinux.org |
| 10 | Description: |
| 11 | Control the maximum brightness for <ambient light zone> |
| 12 | on this <backlight>. Values are between 0 and 127. This file |
| 13 | will also show the brightness level stored for this |
| 14 | <ambient light zone>. |
| 15 | |
| 16 | What: /sys/class/backlight/<backlight>/<ambient light zone>_dim |
| 17 | What: /sys/class/backlight/<backlight>/l2_bright_dim |
| 18 | What: /sys/class/backlight/<backlight>/l3_office_dim |
| 19 | What: /sys/class/backlight/<backlight>/l4_indoor_dim |
| 20 | What: /sys/class/backlight/<backlight>/l5_dark_dim |
| Jesper Juhl | e117d10 | 2011-08-02 00:53:09 +0200 | [diff] [blame] | 21 | Date: May 2011 |
| 22 | KernelVersion: 3.0 |
| Michael Hennerich | a59ec1e | 2011-06-15 15:08:11 -0700 | [diff] [blame] | 23 | Contact: device-drivers-devel@blackfin.uclinux.org |
| 24 | Description: |
| 25 | Control the dim brightness for <ambient light zone> |
| 26 | on this <backlight>. Values are between 0 and 127, typically |
| 27 | set to 0. Full off when the backlight is disabled. |
| 28 | This file will also show the dim brightness level stored for |
| 29 | this <ambient light zone>. |
| 30 | |
| 31 | What: /sys/class/backlight/<backlight>/ambient_light_level |
| Jesper Juhl | e117d10 | 2011-08-02 00:53:09 +0200 | [diff] [blame] | 32 | Date: May 2011 |
| 33 | KernelVersion: 3.0 |
| Michael Hennerich | a59ec1e | 2011-06-15 15:08:11 -0700 | [diff] [blame] | 34 | Contact: device-drivers-devel@blackfin.uclinux.org |
| 35 | Description: |
| 36 | Get conversion value of the light sensor. |
| 37 | This value is updated every 80 ms (when the light sensor |
| 38 | is enabled). Returns integer between 0 (dark) and |
| 39 | 8000 (max ambient brightness) |
| 40 | |
| 41 | What: /sys/class/backlight/<backlight>/ambient_light_zone |
| Jesper Juhl | e117d10 | 2011-08-02 00:53:09 +0200 | [diff] [blame] | 42 | Date: May 2011 |
| 43 | KernelVersion: 3.0 |
| Michael Hennerich | a59ec1e | 2011-06-15 15:08:11 -0700 | [diff] [blame] | 44 | Contact: device-drivers-devel@blackfin.uclinux.org |
| 45 | Description: |
| 46 | Get/Set current ambient light zone. Reading returns |
| 47 | integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark). |
| 48 | Writing a value between 1..5 forces the backlight controller |
| 49 | to enter the corresponding ambient light zone. |
| 50 | Writing 0 returns to normal/automatic ambient light level |
| 51 | operation. The ambient light sensing feature on these devices |
| 52 | is an extension to the API documented in |
| 53 | Documentation/ABI/stable/sysfs-class-backlight. |
| 54 | It can be enabled by writing the value stored in |
| 55 | /sys/class/backlight/<backlight>/max_brightness to |
| 56 | /sys/class/backlight/<backlight>/brightness. |